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20130106
20130114
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. >> at the end of the game, is it really worth it? >> reporter: his family donated his brain to science, the national institutes of health found evidence of hardened brain cells like these. telltale signs of chronic traumatic disease. >> all concurred with the diagnosis of cte. >> reporter: chronic blows to the head, including concussions, can cause cte. the symptoms include dementia, mood swings and depression severe enough to lead to suicide. >> the combination of depression and lack of impulse control probably contributes to the suicide we see. >> reporter: researchers have documented 50 football players stricken by cte, 35 nfl players, 6 high school players. >> cte is not being seen in individuals without repetitive head injury. >> reporter: this revelation has summoned the nfl, questioning their own health. >> at times i do forget things, the sleepless nights you may have, you start to wonder are you down that path towards cte? >> reporter: the seau family noticed his change in personality in the last years of his life. from outgoing, hard charging family leader, to withdrawn loner
Search Results 0 to 2 of about 3 (some duplicates have been removed)

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